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Nickelalumite (Nickelalumit)

Collectors Summary

Color himmelblau
Streak color bläulichweiß
Hardness (Mohs) 2.5
Cleavages {???} vollkommen
Crystal System monoklin, P21/n

Chemism

Chemical formula

NiAl4(SO4)(OH)12(H2O)3

Chemical composition

Aluminium, Nickel, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 520.8172888 u; Number of atoms in the formula: 43

Info

Empirical formula:

NiAl4(SO4)(OH)12(H2O)3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

3.48

18

41.86

1.0079470

18.1430460
Oxygen

O

58.37

19

44.19

15.9994300

303.9891700
Aluminium

Al

20.72

4

9.30

26.9815382

107.9261528
Sulfur

S

6.16

1

2.33

32.0655000

32.0655000
Nickel

Ni

11.27

1

2.33

58.6934200

58.6934200

Analysis wt%

NiO : 10.59, CuO : 3.76, Al2O3 : 38.55, N2O5 : 5.10, SO3 : 11.35, H2O : 30.65 (Ref: berechnet)

Strunz 9th edition incl. updates

7.DD.75

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
D: Sulfate (Selenate, etc.) mit weitere Anionen, mit H2O
D: mit mittelgroßen Kationen; Lagen von kantenverknüpften Oktaedern
75:Chalkoalumit-Gruppe

Lapis Classification

VI/D.08-060

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
D: Wasserhaltige Sulfate, mit fremden Anionen
8: Mittelgroße Kationen

Classification by Hölzel

7.DD.900

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
D: Sulfates (+Anions +Water)
D: Sulfate-Hydrotalcites

IMA status

vormals Ohne Prüfung durch die CNMNC veröffentlicht

anerkannt - CNMNC Newsletter 70, Okt. 2022 - Nov.2022

Mineral status

anerkanntes Mineral

Optical Properties

Color

himmelblau

Streak color

bläulichweiß

max. Birefringence

0.011
Birefringence chart\! Nickelalumite title=Birefringence chart Nickelalumite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.532

RI value γ / ε

1.543

2V angle

Biaxial

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/n

Cell parameters a (Å)

10.2567(5)

Cell parameters b (Å)

8.8815(4)

Cell parameters c (Å)

17.0989(8)

Cell parameters a/b or c/a

1.155

Cell parameters c/b

1.925

Cell parameters α

90°

Cell parameters β

95.548(1)°

Cell parameters γ

90°

Z

4

Volumne (ų)

1550.326

Kristall structure

Das Ni Analog von Chalkoalumit; Struktur ermittelt

X-Ray Powder Diffraction

8.35(100), 4.27(90), 3.02(60), 2.683(60), 2.508(80), 2.276(70), 1.981(90), 1.480(60)
XRD chart Nickelalumite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.5

Density (g/cm³)

2.24

2.231 ( ρ calc. Mineralienatlas )

Cleavages

{???} vollkommen

(Co-)Type locality

(Co-)Type locality

Kirgistan/Osch (Osh), Oblast/Kara-Tangi

Type material

Das Typenmaterial ist in den Sammlungen des Fersman Mineralogischen Museums, Russische Akademie der Wissenschaften, Leninskiy Prospekt 18-2, Moskau 119071, Russland, Registriernummer 6794, hinterlegt.

Preface

Author (Name, Year)

Martini, 1980

Vladimir Y. Karpenko, Atali A. Agakhanov, Leonid A. Pautov, Tamara V. Dikaya, Galiya K. Bekenova, Yulia Uvarova, Elena Sokolova, und Frank C. Hawthorne (2022)

References

Canadian Mineralogist 43 (2005), 1511

Karpenko, V. Y., Agakhanov, A. A., Pautov, L. A., Dikaya, T. V., Bekenova, G. K., Uvarova, Y., Sokolova, E., and Hawthorne, F. C.: Nickelalumite, IMA 2022-071, in: CNMNC Newsletter 70, Eur. J. Mineral., 34, https://doi.org/10.5194/ejm-34-591-2022, 2022.

Other languages

German

Nickelalumit

French

Nickelalumite

English

Nickelalumite

Spanish

Niquelalumita

Russian

Никельалюмит

Alternative Name

Spanish

Nickelalumita

CNMNC (IMA)-Number

IMA 2022-071

CNMNC symbol

Symbol

Nal

Locations with GPS information